C3 Metals Intersects 64.9 Metres at 3.45% Copper Equivalent, Including 23.3 Metres at 6.64% Copper Equivalent at its Khaleesi Project, Peru - Highest Grade Copper and Gold Mineralization Intersected to Date at Khaleesi

(TSXV: CCCM) (OTCQB: CUAUF) C3 Metals Inc. announced the highest-grade copper-gold-silver mineralization intersected to date at its 100%-owned Khaleesi copper project in southern Peru. Drill hole KHZ5790-005 intersected 64.9 metres at 2.53% copper, 0.87 g/t gold, 11.6 g/t silver, and 6 ppm molybdenum (3.45% CuEq) from approximately 337.6m downhole depth, including a high-grade interval of 23.3m at 4.75% copper, 1.84 g/t gold, 20.4 g/t silver, and 5 ppm molybdenum (6.64% CuEq) from 352.1m. Additional intervals in KHZ5790-005 include 27.0m at 0.22% Cu, 0.021 g/t Au, 0.69 g/t Ag, 4 ppm Mo (0.25% CuEq) from 218.1m; 9.1m at 0.22% Cu, 0.027 g/t Au, 1.21 g/t Ag, 33 ppm Mo (0.27% CuEq) from 300.5m; 17.1m at 0.16% Cu, 0.009 g/t Au, 0.30 g/t Ag, 42 ppm Mo (0.19% CuEq) from 426.3m; and 41.5m at 0.27% Cu, 0.012 g/t Au, 0.51 g/t Ag, 160 ppm Mo (0.36% CuEq) from 507.5m. Notable short intervals include 1.5m at 5.39% Cu, 2.85 g/t Au, 18.7 g/t Ag at 345.5m; 1.9m at 6.77% Cu, 1.79 g/t Au, 34.5 g/t Ag at 352.8m; 2.0m at 8.80% Cu, 3.09 g/t Au, 31.9 g/t Ag at 361.2m; 2.0m at 4.22% Cu, 1.37 g/t Au, 18.7 g/t Ag at 372.6m; 1.5m at 1.71% Cu, 0.17 g/t Au, 11.4 g/t Ag at 378.10m; and 1.8m at 3.68% Cu, 1.71 g/t Au, 15.4 g/t Ag at 395.2m. Approximately 16,830m of drilling has been completed in 38 holes from 17 drill platforms at Khaleesi, with one additional hole in progress. Drone magnetic and gravity surveys were recently completed over 1,500 hectares, and a 3DIP survey commenced in late September and is expected to be completed during November 2026. The company is prioritizing 50m to 100m step-out holes to test the geometry, continuity, and potential extent of the high-grade mineralization. The Khaleesi project is located in the Andahuaylas-Yauri Belt in southeastern Peru, 8km west of the Jasperoide Project, where C3 Metals confirmed 13 skarn prospects along a 28km iron-skarn belt. At Jasperoide, a near-surface Measured and Indicated Mineral Resource of 51.9 million tonnes at 0.50% total copper and 0.20 g/t gold for 569.1 million pounds of copper and 326,800 ounces of gold has been reported. C3 Metals holds approximately 31,000 hectares in southern Peru containing the Jasperoide and Khaleesi projects. In Jamaica, the company holds a 100% interest in 17,855 hectares of exploration licenses, with Freeport-McMoRan Exploration Corporation (NYSE: FCX) having the option on 13,020 hectares to earn up to a 75% interest by funding up to US$75 million of exploration and project-related expenditures. C3 Metals also holds a 50% interest in 9,870 hectares in a joint venture with Geophsyx Jamaica Ltd. Barrick Mining Corp. announced on May 1, 2024, an earn-in agreement with Geophysx Jamaica Ltd. on approximately 400,000 hectares of exploration licenses, several of which surround C3 Metals' mineral concessions. Copper Equivalent (CuEq) for drill intersections is calculated based on three-year trailing average prices: US$ 4.18/lb Cu, US$ 2,600/oz Au, US$ 30.54/oz Ag, and US$ 21.46/lb Mo, with 80% metallurgical recoveries assumed for all metals.

C3 Metals Intersects 101.9 Metres at 0.38% and 70.9 Metres at 0.62% Copper Equivalent at its Khaleesi Project, Peru - Mineralization Extended East

(TSXV: CCCM) (OTCQB: CUAUF) C3 Metals Inc. announced results from two additional drill holes, KHZ5960-004 and KHZ5960-005, at its 100%-owned Khaleesi copper project in southern Peru. Drilling extended mineralization 200 metres eastward along section line KHZ5950. KHZ5960-004 intersected a near-surface 101.9m zone grading 0.31% copper, 0.025 g/t gold, 1.06 g/t silver, and 64 ppm molybdenum (0.38% CuEq) from 28.4m downhole, and a 70.9m interval grading 0.53% copper, 0.036 g/t gold, 0.88 g/t silver, and 112 ppm molybdenum (0.62% CuEq) from 376.6m. KHZ5960-005 intersected an 81.3m near-surface zone grading 0.27% copper, 0.021 g/t gold, 0.84 g/t silver, and 54 ppm molybdenum (0.33% CuEq) from 36.7m. Additional intervals from both holes are detailed in Table 1, with copper grades ranging from 0.19% to 0.53% and copper equivalent grades from 0.23% to 0.63%. Mineralization remains open in multiple directions. Approximately 16,830m of drilling has been completed in 38 holes from 17 drill platforms, with one hole in progress. The company recently completed magnetic and gravity surveys over 1,500 hectares, expanded by over 65% from 900 hectares, and a 3DIP survey is currently 65% complete and on track for completion in Q4 2026. The copper equivalent (CuEq) calculation uses three-year trailing average prices: US$ 4.18/lb Cu, US$ 2,600/oz Au, US$ 30.54/oz Ag, and US$ 21.46/lb Mo, with 80% metallurgical recoveries assumed for all metals. Drill holes KHZ5960-004 and KHZ5960-005 were 100m eastern step-outs from KHZ5960-001, which previously intersected a 109.0m zone grading 0.29% copper, 0.028 g/t gold, 0.99 g/t silver, and 115 ppm molybdenum (0.39% CuEq) from 45.0m, and a 118.0m zone grading 0.30% copper, 0.024 g/t gold, 0.85 g/t silver, and 75 ppm molybdenum (0.37% CuEq) from 354.9m. The Khaleesi project is located in the Andahuaylas-Yauri Belt in southeastern Peru, 8km west of the Jasperoide Project, where C3 Metals has confirmed 13 skarn prospects along a 28km iron-skarn belt. At Jasperoide, the company has a Measured and Indicated Mineral Resource of 51.9 million tonnes at 0.50% total copper and 0.20 g/t gold for 569.1 million pounds of copper and 326,800 ounces of gold. C3 Metals holds approximately 31,000 hectares in southern Peru and is also active in Jamaica, holding a 100% interest in 17,855 hectares of exploration licenses, with Freeport-McMoRan Exploration Corporation (NYSE: FCX) having an option on 13,020 hectares to earn up to a 75% interest by funding up to US$75 million in expenditures. The company also holds a 50% interest in 9,870 hectares in a joint venture with Geophysx Jamaica Ltd. Barrick Mining Corp. announced an earn-in agreement with Geophysx Jamaica Ltd. on approximately 400,000 hectares of exploration licenses in Jamaica, several of which surround C3 Metals' concessions. Mining is the second largest industry in Jamaica. Stephen Hughes, P.Geo., Vice President Exploration and Director, is the Qualified Person for the release.

C3 Metals Completes District Scale 3DIP Survey Over the Bellas Gate Project, Jamaica; Confirms Multiple Deep-Seated Porphyry Targets

(TSXV: CCCM) (OTCQB: CUAUF) C3 Metals Inc. announced the completion of a large-scale, 3D-electrical geophysical survey at its 100% owned Bellas Gate project in Jamaica, covering an area of over 80 square kilometres. The 3DIP Survey identified multiple, deep-rooted chargeability anomalies coincident with broad zones of porphyry-style alteration and mineralization at surface, particularly at the Provost, Kola and Lucky Valley Prospects. The company has designed a drill program of up to 11 holes totalling 10,800m, anticipated to commence in October 2026 and be completed by April 2027. On February 11, 2025, C3 Metals announced an earn-in agreement with Freeport-McMoRan Exploration Corporation (NYSE: FCX), whereby Freeport can earn up to 75% in the project by funding up to US$75 million in exploration and project related expenditures. The Bellas Gate project comprises three separate Special Exclusive Prospecting Licenses and totals 13,020 hectares. C3 Metals holds approximately 31,000 hectares in Southern Peru, including the Jasperoide and Khaleesi projects, and has published a maiden resource estimate at Jasperoide containing Measured & Indicated Resources of 52Mt at 0.5% copper and 0.2 g/t gold. The company also holds a 50% interest in 9,870 hectares in a joint venture with Geophysx Jamaica Ltd.

C3 Metals Significantly Expands Copper Mineralization at Khaleesi Project, Peru with 67.6 Metres at 0.51% Copper Equivalent and 60.9 Metres of 0.55% Copper Equivalent in Two New Skarn Discoveries

(TSXV: CCCM) C3 Metals Inc. announced results from 10 new holes drilled at its 100%-owned Khaleesi copper project in southern Peru. Hole KHZ5450-001 intersected 67.6m at 0.45% copper, 0.029 g/t gold, 1.51 g/t silver, and 17 ppm molybdenum (0.51% CuEq) from approximately 90m vertical depth. Hole KHZ5140-001 intersected a 4.2m wide manto-style zone assaying 2.97% copper, 0.015 g/t gold, 4.92 g/t silver, and 2 ppm molybdenum (3.16% CuEq) from approximately 275m vertical depth. Since the maiden drill program commenced at Khaleesi on September 30, 2025, approximately 13,600m of drilling has been completed in 31 holes, with assays now reported for 27 holes. The company holds approximately 31,000 hectares in southern Peru and a 100% interest in 17,855 hectares of exploration licenses in Jamaica, with Freeport-McMoRan Exploration Corporation (NYSE: FCX) having the option on 13,020 hectares to earn up to a 75% interest by funding up to US$75 million. The company projects that geophysical surveys (drone magnetics, 3D induced polarization and gravity) are scheduled to be completed between mid-June and September 2026 in both the initial discovery area and an expanded area of interest. Drilling will continue concurrent with the collection of this expanded data set.

C3 Metals Continues to Intersect Broad Zones of Near-Surface Copper Mineralization at the Khaleesi Project, Peru

C3 Metals Inc. (TSXV: CCCM, OTCQB: CUAUF) announced results from 11 additional drill holes at its 100%-owned Khaleesi copper project in southern Peru. Highlights include a 148.05m interval at 0.42% CuEq (0.34% copper) from 275.00m downhole depth and a 43.80m interval at 0.59% CuEq (0.47% copper) from 40.1m downhole depth. The company has completed approximately 11,000m of drilling in 24 holes, with assays now reported for the first 17 holes. C3 Metals also granted 2,779,750 stock options to directors, officers, employees, and consultants at a price of CAD$1.10 per share, with a total of 8,625,120 stock options now outstanding. The results confirm copper mineralization in all of the first 12 holes drilled at Khaleesi, supporting the project's potential.